[9question1]

It's an ad. The key point he works up to is `Put another way, you need a sidecar database. The data moat needs to be fast and queryable. This is a Search Problem!` And then of course this is hosted on the corporate blog of a code search platform. It's `make sure you have good prompt context` but trying to define that specifically as the thing they're selling

[hn_throwaway_99]

As another commenter said, this needs a March 2023 tag. RAG is now pretty standard and their are lots of vector databases that do this.